protected Token getOrAddTerminalNode(int index) throws MaltChainedException {
Token node = null;
if (!terminalNodes.containsKey(index)) {
if (index > 0) {
node = terminalPool.checkOut();
node.setIndex(index);
node.setBelongsToGraph(this);
if (index > 1) {
Token prev = terminalNodes.get(index - 1);
if (prev == null) {
try {
prev = terminalNodes.get(terminalNodes.headMap(index).lastKey());
} catch (NoSuchElementException e) {
}
}
if (prev != null) {
prev.setSuccessor(node);
node.setPredecessor(prev);
}
if (terminalNodes.lastKey() > index) {
Token succ = terminalNodes.get(index + 1);
if (succ == null) {
try {
succ = terminalNodes.get(terminalNodes.tailMap(index).firstKey());
} catch (NoSuchElementException e) {
}
}
if (succ != null) {
succ.setPredecessor(node);
node.setSuccessor(succ);
}
}
}
}
terminalNodes.put(index, node);
numberOfComponents++;
} else {
node = terminalNodes.get(index);
}
return node;
}
public void clear() throws MaltChainedException {
terminalPool.checkInAll();
terminalNodes.clear();
sentenceID = 0;
super.clear();
}
